feat: ignore context.TODO and context.Background

[Crocmagnon]

Related to #34

[Crocmagnon]

@ldez would you mind giving this a look please? I'm unsure whether there's a better (simpler) way of ignoring context.Background and context.TODO.

[ldez]

This is the right way.

I recommend creating a function to improve the maintenance and decrease the cyclomatic complexity:

		// Ignore [context.Background] & [context.TODO].
		if isContextFunction(assignStmt.Rhs[0], "Background", "TODO") {
			continue
		}

func isContextFunction(exp ast.Expr, fnName ...string) bool {
	call, ok := exp.(*ast.CallExpr)
	if !ok {
		return false
	}

	selector, ok := call.Fun.(*ast.SelectorExpr)
	if !ok {
		return false
	}

	ident, ok := selector.X.(*ast.Ident)
	if !ok {
		return false
	}

	return ident.Name == "context" && slices.Contains(fnName, selector.Sel.Name)
}

[Crocmagnon]

Thanks!